693538 has 8 divisors (see below), whose sum is σ = 1095120. Its totient is φ = 328500.

The previous prime is 693533. The next prime is 693569. The reversal of 693538 is 835396.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (693533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9088 + ... + 9163.

It is an arithmetic number, because the mean of its divisors is an integer number (136890).

2⁶⁹³⁵³⁸ is an apocalyptic number.

693538 is a deficient number, since it is larger than the sum of its proper divisors (401582).

693538 is a wasteful number, since it uses less digits than its factorization.

693538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18272.

The product of its digits is 19440, while the sum is 34.

The square root of 693538 is about 832.7892890762. The cubic root of 693538 is about 88.5163343508.

The spelling of 693538 in words is "six hundred ninety-three thousand, five hundred thirty-eight".